Remove Vowels

Given a string s, remove all the vowels from it. Vowels are defined as \(\{a, e, i, o, u, A, E, I, O, U\}\). Your task is to write a program that reads a string from standard input and outputs the string with all vowels removed. If the input is "None" (representing a missing value), the program should output an empty string.

Note: The input string may contain spaces, punctuation, numbers, and other special characters which should remain unchanged.

inputFormat

The input is provided via standard input (stdin) as a single line containing the string s. The string can be empty. If the string is exactly "None", it should be treated as a null input, and the program should output an empty string.

outputFormat

Output the modified string to standard output (stdout) after removing all vowels.

This is a sample string.

Ths s  smpl strng.